/*-
 * ========================LICENSE_START=================================
 * Smooks Commons
 * %%
 * Copyright (C) 2020 Smooks
 * %%
 * Licensed under the terms of the Apache License Version 2.0, or
 * the GNU Lesser General Public License version 3.0 or later.
 * 
 * SPDX-License-Identifier: Apache-2.0 OR LGPL-3.0-or-later
 * 
 * ======================================================================
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * ======================================================================
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * =========================LICENSE_END==================================
 */
package org.smooks.util;

import java.util.*;

/**
 * Collections Utilities.
 * 
 * @author <a href="mailto:tom.fennelly@jboss.com">tom.fennelly@jboss.com</a>
 */
public class CollectionsUtil {

    /**
     * Private constructor.
     */
    private CollectionsUtil() {
    }

    /**
     * Create an Object {@link Set} from the supplied objects.
     * @param objects The objects to be added to the set.
     * @return The {@link Set}.
     */
    public static <T> Set<T> toSet(T... objects) {
        Set<T> theSet = new HashSet<T>();
        addToCollection(theSet, objects);
        return theSet;
    }

    /**
     * Create an Object {@link List} from the supplied objects.
     * @param objects The objects to be added to the list.
     * @return The {@link List}.
     */
    public static <T> List<T> toList(T... objects) {
        List<T> theList = new ArrayList<T>();
        addToCollection(theList, objects);
        return theList;
    }

    /**
     * Create an Object {@link List} from the supplied Enumeration of objects.
     * @param objects The objects to be added to the list.
     * @return The {@link List}.
     */
    public static <T> List<T> toList(Enumeration<T> objects) {
        List<T> theList = new ArrayList<T>();
        while(objects.hasMoreElements()) {
        	theList.add(objects.nextElement());
        }        
        return theList;
    }

    private static <T> void addToCollection(Collection<T> theCollection, T... objects) {
        for(T object : objects) {
            theCollection.add(object);
        }
    }
}
